According to the SAFE blockchain browser, as of May 22, 2019, the number of SAFE master nodes has exceeded 5,000, surpassing DASH ranking third in the world. According to the SAFE Foundation, the establishment of a primary node requires the mortgage of 1000 SAFEs, ie at least 5 million SAFEs are currently locked. After having the SAFE master node, users can enjoy voting rights for SAFE community building proposals and various benefits of the SAFE ecosystem. The more the main nodes, the more and more users participate in the construction of the SAFE public chain, which is conducive to the coordinated development of the SAFE ecosystem. The master node is the key to the survival and quality of the blockchain project. The number of stable master nodes not only ensures the security of the project, but also encourages all parties to participate in operation and maintenance.